IRONMAN TRIATHLON 70.3 Nice Coaches Race Guide
- Aug 5
- 4 min read
IRONMAN TRIATHLON WORLD CHAMPIONSHIPS 70.3 Nice Coaches Race Guide:
How to Master the Mediterranean Swim, Col de Vence Bike and Fast Finish
By Nick Harris BA (Hons), Speedy Swimming
IRONMAN 70.3 Nice is one of Europe's most iconic middle-distance triathlons.
Set on the French Riviera, it combines everything athletes love about European racing:
A stunning Mediterranean sea swim
A challenging mountain bike course through the Alpes-Maritimes
A fast, flat run along the legendary Promenade des Anglais
But don't be fooled by the beautiful scenery.
This is not an easy coastal 70.3.
The race rewards athletes who can swim efficiently, climb patiently, descend confidently and manage the heat. The course features a 1.9km single-loop Mediterranean swim, a demanding 90km bike including the Col de Vence climb, and a two-loop 21.1km run along the Promenade des Anglais.
This is how to prepare.
The Swim: Mastering the Mediterranean
The race begins in the clear blue waters of the Mediterranean at Plage des Ponchettes, directly beside the famous Promenade des Anglais.
For many athletes, this will feel very different from a lake swim.
You are dealing with:
Salt water
Open-water navigation
Sun glare
Potential chop from wind
A large international field
The biggest mistake?
Treating it like a pool race.
Swim Smooth, Not Hard
The Nice swim rewards efficiency.
The water is usually calm and buoyant, but conditions can change quickly. A relaxed swimmer who stays on course will often beat a stronger swimmer who fights the water.
Focus on:
✓ Long relaxed strokes
✓ High body position
✓ Controlled breathing
✓ Regular sighting
Your goal is to exit the water ready to climb.
Sighting in Clear Water
Clear Mediterranean water can actually make navigation harder.
Athletes often become distracted by:
Other swimmers
The coastline
The beauty of the surroundings
Stay focused.
A good rhythm:
Sight every 6–10 strokes.
Lift your eyes only slightly.
Keep your hips high.
Avoid zig-zagging.
Swimming an extra 200 metres because you weren't sighting efficiently wastes more time than improving your swim speed.
Wetsuit or No Wetsuit?
Mediterranean water temperatures can vary depending on conditions and race year. Athletes should train for both scenarios.
Prepare for:
Swimming comfortably without relying on wetsuit buoyancy.
Adjusting stroke rhythm if wearing a wetsuit.
Managing heat if the water is warmer.
Your equipment choice should never be a surprise on race morning.
Training Session: Mediterranean Swim Preparation
Open Water Race Simulation
500m easy
3 × 500m at race effort
30 seconds recovery
500m relaxed
Focus:
Straight swimming
Sighting
Controlled breathing
Transition One: Stay Calm
Coming out of the Mediterranean, the race changes immediately.
You go from swimming in beautiful coastal water to preparing for one of the toughest bike courses in the 70.3 calendar.
The mistake:
Rushing transition.
Instead:
Remove your wetsuit calmly.
Put your kit on correctly.
Take nutrition before leaving.
Start the bike composed.
The race is not won in T1.
The Bike: From Sea Level to the Mountains
The Nice bike course is the defining feature of this race.
The 90km route leaves the coast and climbs into the hills of the Alpes-Maritimes, with the Col de Vence providing the major challenge.
This is where many athletes make their biggest mistake:
They ride it like a normal 70.3.
They don't.
Respect the Col de Vence
The climb comes early enough that you feel fresh.
That is dangerous.
You feel good.
You push.
You start overtaking people.
Then the climb continues.
The athletes who run well later are usually the ones who climbed with discipline.
How to Ride the Climb
Think:
Controlled strength.
Your goals:
Stay seated where possible.
Maintain smooth cadence.
Avoid repeated surges.
Keep your breathing controlled.
For most age-group athletes:
Around 80–90% of FTP is a sensible climbing intensity.
You should reach the top thinking:
"I could have gone harder."
That means you did it correctly.
Descending: Where Free Speed Is Won
The descent back towards Nice is just as important as the climb.
Many athletes focus only on climbing fitness.
But confidence descending can save significant time.
Practise:
Looking through corners.
Braking before bends.
Relaxing your upper body.
Holding speed safely.
Do not arrive in Nice with tired legs and a nervous mind.
Bike Training for Nice
Climbing Strength Session
Warm up:
20 minutes
Main set:
4 × 10 minutes climbing effort
Recovery:
5 minutes easy
Cool down.
Focus:
Smooth power
Comfortable cadence
Controlled breathing
Mountain Simulation Ride
3–4 hours:
Include:
Long climbs
Descents
Race nutrition
Practise exactly what race day requires.
Nutrition on the Bike
Nice can be hot.
Your nutrition strategy must begin early.
Do not wait until the climb.
Aim for:
Regular carbohydrate intake
Consistent hydration
Electrolytes when needed
The bike is where you prepare your run.
The Run: Fast, Flat and Exposed
After the mountains, the final 21.1km feels very different.
The run takes place along the iconic Promenade des Anglais on a two-loop course.
It looks easy.
That is why athletes get caught out.
The challenge is not elevation.
It is:
Heat
Fatigue
Sun exposure
Holding pace after a hard bike
Run Strategy
First 5km
Be patient.
Your legs need time to adapt.
Ignore athletes flying past you.
5–15km
Settle into your rhythm.
Fuel.
Hydrate.
Stay relaxed.
Final 6km
Now race.
If you paced the bike correctly, this is where you start gaining places.
Brick Training for Nice
A key session:
Bike:
3 hours including climbing
Immediately:
45-minute run
First 15 minutes:
Easy
Then:
Build towards race pace.
Your body needs to learn how to run after climbing.
Equipment Checklist
For Nice:
✓ Tested wetsuit
✓ Comfortable climbing gears
✓ Reliable tyres
✓ Sunglasses for descending
✓ Race nutrition tested
✓ Lightweight run kit
Avoid making equipment decisions on race week.
Five Common Mistakes
Swimming too aggressively.
Treating the Col de Vence like a time trial.
Forgetting descending skills.
Under-fuelling because the scenery is distracting.
Running too fast in the first 5km.
Final Thoughts
IRONMAN 70.3 Nice is a race of contrasts.
The Mediterranean rewards calm swimming.
The mountains reward patience.
The Promenade rewards disciplined pacing.
The athletes who succeed are not necessarily the ones with the biggest engines.
They are the ones who execute.
Swim smooth.
Climb smart.
Descend confidently.
Run strong.
Preparing for IRONMAN 70.3 Nice?
At Speedy Triathlon Coaching, I help athletes prepare for challenging international races with:
Open water swim coaching
Swim video analysis
Triathlon coaching
Race-specific preparation
Whether you are chasing a personal best or preparing for your first European 70.3, the right preparation turns a tough course into an unforgettable experience.
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